CN114059399B - Seamless rack track structure - Google Patents
Seamless rack track structure Download PDFInfo
- Publication number
- CN114059399B CN114059399B CN202111585642.9A CN202111585642A CN114059399B CN 114059399 B CN114059399 B CN 114059399B CN 202111585642 A CN202111585642 A CN 202111585642A CN 114059399 B CN114059399 B CN 114059399B
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- Prior art keywords
- rack
- seamless
- sleeper
- rail
- track structure
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Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B9/00—Fastening rails on sleepers, or the like
- E01B9/02—Fastening rails, tie-plates, or chairs directly on sleepers or foundations; Means therefor
- E01B9/32—Fastening on steel sleepers with clamp members
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/001—Track with ballast
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2/00—General structure of permanent way
- E01B2/003—Arrangement of tracks on bridges or in tunnels
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B3/00—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails
- E01B3/16—Transverse or longitudinal sleepers; Other means resting directly on the ballastway for supporting rails made from steel
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B5/00—Rails; Guard rails; Distance-keeping means for them
- E01B5/02—Rails
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Railway Tracks (AREA)
Abstract
The invention relates to the technical field of railway tracks, in particular to a seamless rack track structure which comprises steel rails, racks, a fastener system and a sleeper, wherein the steel rails and the racks are fixedly connected above the sleeper through the fastener system, the racks are positioned between the two steel rails, the section of each rack is I-shaped, gear teeth are arranged at the rail heads of the racks, and two adjacent racks are in seamless connection through welding. According to the invention, the I-shaped rail head is processed to form the rack structure, so that the bending resistance of the rack structure is enhanced, the length of the unit rack can be prolonged, the tail end of the unit rack can be welded to form a seamless rack, the mechanical properties of the rack and a steel rail are more coordinated, the service performance of the rail structure is better, and the running stability of a train is improved.
Description
Technical Field
The invention relates to the technical field of railway tracks, in particular to a seamless rack track structure.
Background
The rack rail traffic is a rail traffic system suitable for short-distance, medium and small passenger traffic transportation in mountainous areas. Compared with the traditional rail transit, the track has the remarkable characteristics that a rack or step-shaped tooth parallel to the steel rail is paved in the middle of the track, and meanwhile, a corresponding gear is arranged on the bogie axle. Since rack traffic systems are generally suitable for large ramp sections, the track structure bears the longitudinal forces from the train traction, as well as the longitudinal force components of the overall train-track system gravity, and the transverse forces of the curved section. Therefore, the track structure needs to have large longitudinal and lateral resistances to support smooth running of the train.
At present, the domestic and foreign rack structures mostly adopt a unit type slotted rack structure, namely racks with certain unit length are adopted, and the racks are connected into long racks through joints (joint clamping plates and bolts). The unit length of the rack structure is generally not more than 3m, subject to the traditional rack processing technology. The large number of rack joints not only increases construction and maintenance cost, but also influences the stability and comfort of train operation as the joints are used as weak links of the rack structure.
In addition, due to the high precision requirement of meshing transmission between the gear and the toothed rail and the complexity of longitudinal force and deformation transmission of a steel rail-ballast bed-bridge structure system, the longitudinal deformation requirement of the unit type slotted toothed rail structure on the lower bridge structure is very strict, so that the toothed rail at home and abroad has no application on long-span bridges so far, and even a common bridge needs to adopt an arch bridge structure with higher manufacturing cost to control the deformation.
Disclosure of Invention
The invention aims at: aiming at the problems existing in the prior art, the seamless rack track structure is provided, and the rack structure is formed by processing the H-shaped rail head, so that the bending resistance of the rack structure is enhanced, a seamless rack can be formed at the tail end of a unit rack through welding, and the running stability of a train is improved.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
the utility model provides a seamless rack track structure, includes rail, rack, fastener system and sleeper, the rail the rack all pass through fastener system fixed connection in the top of sleeper, the rack is located two between the rail, the section of rack is the I-shaped, the rack railhead of rack is equipped with the teeth of a cogwheel, adjacent two carry out seamless connection through the welding between the rack.
The seamless rack track structure adopts the I-shaped section to process the teeth, so that not only the bending resistance of the racks is improved, but also the length of the unit racks can be lengthened, the straightness of the racks along the line direction is ensured, meanwhile, the rack joint of the original structure is removed, the construction, operation and maintenance costs can be effectively reduced, and the seamless structure can greatly improve the comfort of passengers when a train runs.
The seamless rack track structure has the advantages that the seamless structure is formed by welding the racks and the racks, so that the seamless structure in the same form as the steel rail is realized, the mechanical properties of the racks and the steel rail are more coordinated, and the service performance of the track structure is better.
As a preferable scheme of the invention, two adjacent racks are in seamless connection through thermite welding.
The welding position is welded at the tooth root according to the end part structure form of the rack, and as the preferable scheme of the invention, the welding position is positioned at the tooth root to form a complete tooth shape, thereby being beneficial to the mechanical property of the rack.
As a preferred scheme of the invention, the rack is integrally forged or cast into teeth, and the rack is equal in length with the steel rail.
As a preferable scheme of the invention, the sleeper is a shell raft structure formed by interconnecting a plurality of transverse steel sleepers and longitudinal steel sleepers.
The seamless rack track structure of the invention forms the shell raft type frame sleeper by welding the longitudinal and transverse steel sleepers, thereby greatly enhancing the longitudinal and transverse resistance of the track structure, and improving the stability and comfort of the train operation in the large ramp section by a stable foundation.
As a preferred embodiment of the present invention, the longitudinal steel sleeper is welded to both ends of the transverse steel sleeper.
As a preferred embodiment of the present invention, the longitudinal steel sleeper is welded to the middle of the transverse steel sleeper.
As a preferable scheme of the invention, the transverse steel sleeper and the longitudinal steel sleeper are of inverted U-shaped structures. A large number of broken stone railway ballasts can be filled in the inverted U-shaped structure, so that the longitudinal and transverse resistance of the sleeper of the shell raft frame is increased.
As a preferable scheme of the invention, the two ends of the inverted U-shaped structure are in barb structures, so that the longitudinal and transverse resistance of the shell raft frame sleeper is further enhanced.
As a preferred scheme of the invention, the top surface of the transverse steel sleeper is provided with bolt holes for installing the steel rail and the rack.
In summary, due to the adoption of the technical scheme, the beneficial effects of the invention are as follows:
1. the seamless rack track structure adopts the I-shaped section to process the teeth, so that not only the bending resistance of the racks is improved, but also the length of the unit racks can be lengthened, the straightness of the racks along the line direction is ensured, meanwhile, the rack joint of the original structure is removed, the construction, operation and maintenance costs can be effectively reduced, and the seamless structure can greatly improve the comfort of passengers when a train runs.
2. The seamless rack track structure has the advantages that the seamless structure is formed by welding the racks and the racks, so that the seamless structure in the same form as the steel rail is realized, the mechanical properties of the racks and the steel rail are more coordinated, and the service performance of the track structure is better.
3. The seamless rack track structure of the invention forms the shell raft type frame sleeper by welding the longitudinal and transverse steel sleepers, thereby greatly enhancing the longitudinal and transverse resistance of the track structure, and improving the stability and comfort of the train operation in the large ramp section by a stable foundation.
4. The transverse steel sleeper and the longitudinal steel sleeper of the seamless rack track structure are of an inverted U-shaped structure, and a large number of broken stone railway ballasts can be filled in the inverted U-shaped structure, so that the longitudinal resistance and the transverse resistance of the shell raft frame sleeper are increased.
5. The seamless rack track structure of the invention fundamentally releases the constraint of a rack system with mechanical precision on a lower base structure, can obviously control engineering investment, and improves the adaptability of the rack rail under different topography and geological topography conditions.
Drawings
FIG. 1 is a schematic diagram of a seamless rack track construction;
FIG. 2 is a schematic view of a sleeper structure of a shell raft frame according to embodiment 1;
FIG. 3 is a schematic view of a sleeper structure of a shell raft frame according to embodiment 2;
FIG. 4 is a schematic cross-sectional view of a longitudinal and transverse steel tie;
FIG. 5 is a schematic view of a transverse steel tie;
FIG. 6 is a schematic cross-sectional view of a rack;
FIG. 7 is a schematic side view of a rack;
fig. 8 is a schematic diagram of a seamless rack weld.
Icon: 1-rail, 2-rack, 21-rack head, 22-rack weld, 3-fastener system, 4-sleeper, 41-transverse steel sleeper, 411-rail fastener bolt hole, 412-rack fastener bolt hole, 42-longitudinal steel sleeper.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
The present invention will be described in further detail with reference to the drawings and examples, in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Example 1
As shown in fig. 1 and 2, a seamless rack track structure comprises a shell raft frame sleeper 4, a fastener system 3, a steel rail 1 and a rack 2, wherein the shell raft frame sleeper 4 is formed by welding longitudinal steel sleepers 42 on two sides of a plurality of transverse steel sleepers 41 to form a shell raft structure (the steel sleepers are longitudinally and transversely connected with each other to form a raft structure). The steel rails 1 are arranged on two sides above the shell raft type frame sleeper 4 along the line direction and are connected with the shell raft type frame sleeper 4 through a fastener system 3; the rack 2 is arranged in the line direction between two rails 1 above a shell raft frame sleeper 4 and is connected to the shell raft frame sleeper 4 by means of a fastening system 3.
The welding between the transverse steel sleeper 41 and the longitudinal steel sleeper 42 is preferably angle seam welding, and the reliability and stability of the connection of the shell raft frame sleeper 4 after welding are ensured.
As shown in fig. 4, the cross sections of the transverse steel sleeper 41 and the longitudinal steel sleeper 42 are in an inverted U-shaped structure, two sides of the lower opening are in a barb structure, and a large number of broken stone railway ballasts can be filled in the inverted U-shaped structure, so that the longitudinal and transverse resistances of the shell raft frame sleeper 4 are increased.
As shown in fig. 5, rail fastener bolt holes 411 and rack fastener bolt holes 412 are respectively formed at the corresponding positions of the top of the transverse steel sleeper 41, where the rails 1 and racks 2 are installed. According to the selection of the buckling mode, a reasonable fastener system 3 is selected, the fastener systems of the steel rail 1 and the rack 2 are preferably the same type of fastener system 3, the construction maintenance workload can be reduced while the types of fasteners are reduced, and the corresponding cost is reduced.
As shown in fig. 6 and 7, the section of the rack 2 is i-shaped, the rack rail head 21 is provided with a corresponding height according to the structural form of the gear of the vehicle, generally, the rack rail head 21 is higher than the rail head of the common rail 1 by about 75mm, the rack rail head 21 is provided with gear teeth with the same tooth form according to the gear of the vehicle, the length of the unit rack is determined according to the tooth form parameter, the unit rack is preferably equal to the length of the rail (12.5 m or 25 m), and the end part of the rack is preferably processed to be 1/2 of the tooth root part.
As shown in fig. 8, the integral rack structure is preferably forged or cast into teeth, ensuring the accuracy requirements by milling. A strip is formed between two adjacent racks 2 by welding (preferably thermite welding) to achieve a seamless rack structure (in fig. 8, reference numeral 22 is a rack weld). The welding position is welded at the same tooth top or tooth root position according to the end structure form of the rack, and the welding at the tooth root position is optimized, so that a complete tooth shape is formed, and the mechanical property of the rack is benefited.
Example 2
As shown in fig. 3, the case raft frame sleeper 4 in example 2 is formed of several transverse steel sleepers 41 with longitudinal steel sleepers 42 welded at intermediate positions, differently from the case 1.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the invention.
Claims (10)
1. The utility model provides a seamless rack track structure, its characterized in that includes rail (1), rack (2), fastener system (3) and sleeper (4), rail (1) rack (2) all pass through fastener system (3) fixed connection in the top of sleeper (4), rack (2) are located two between rail (1), the section of rack (2) is the I-shaped, rack railhead (21) of rack (2) are equipped with the teeth of a cogwheel, adjacent two carry out seamless connection through the welding between rack (2), rack (2) adopt whole forging or casting to become the tooth.
2. A seamless rack track structure according to claim 1, wherein adjacent two racks (2) are seamlessly connected by thermite welding.
3. A seamless rack track construction according to claim 2 wherein the weld locations are at the root of the teeth.
4. A seamless rack track structure according to claim 1, wherein the rack (2) is of equal length to the rail (1).
5. A seamless rack track structure according to any of claims 1-4, wherein the sleeper (4) is a shell raft structure formed by interconnecting several transverse steel sleepers (41), longitudinal steel sleepers (42).
6. A seamless rack track structure according to claim 5, wherein the longitudinal steel sleepers (42) are welded to both ends of the transverse steel sleepers (41).
7. A seamless rack track structure according to claim 5, wherein the longitudinal steel sleeper (42) is welded to the middle of the transverse steel sleeper (41).
8. A seamless rack track structure according to claim 5, wherein the transverse steel sleeper (41) and the longitudinal steel sleeper (42) are of inverted U-shaped configuration.
9. The seamless rack track structure according to claim 8, wherein the inverted U-shaped structure has barb structures at both ends.
10. A seamless rack track structure according to claim 5, characterized in that the top surface of the transverse steel sleeper (41) is provided with bolt holes for mounting the rail (1) and the rack (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585642.9A CN114059399B (en) | 2021-12-22 | 2021-12-22 | Seamless rack track structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111585642.9A CN114059399B (en) | 2021-12-22 | 2021-12-22 | Seamless rack track structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114059399A CN114059399A (en) | 2022-02-18 |
| CN114059399B true CN114059399B (en) | 2023-04-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111585642.9A Active CN114059399B (en) | 2021-12-22 | 2021-12-22 | Seamless rack track structure |
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| CN (1) | CN114059399B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118007479A (en) * | 2024-04-09 | 2024-05-10 | 云南星石科技有限公司 | Mining rack rail entering laying device |
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| CN202320307U (en) * | 2011-11-18 | 2012-07-11 | 泰安芬瑞特机械有限公司 | Gear monorail crane driving device |
| KR20150012439A (en) * | 2013-07-25 | 2015-02-04 | 대우조선해양 주식회사 | Pipe rack module of offshore structure |
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| DE4319165C1 (en) * | 1993-06-09 | 1994-08-18 | Elektro Thermit Gmbh | Process for the intermediate cast welding of isothermally annealed rails |
| CN201056659Y (en) * | 2006-04-16 | 2008-05-07 | 马扬茗 | Cross connected seamless rail |
| CN206233041U (en) * | 2016-09-29 | 2017-06-09 | 中铁八局集团桥梁工程有限责任公司 | A kind of sleeper housing long |
| CN209890092U (en) * | 2018-11-06 | 2020-01-03 | 云南星石科技有限公司 | Single-rail hanger rack rail and hanger thereof |
| CN109778690B (en) * | 2019-03-04 | 2024-04-02 | 中铁第一勘察设计院集团有限公司 | Seamless toothed rail fixing and connecting component on long ramp line bridge |
| CN209958160U (en) * | 2019-03-29 | 2020-01-17 | 西南交通大学 | Rack rail structure of rack rail railway |
| CN212742024U (en) * | 2020-06-30 | 2021-03-19 | 中铁二院工程集团有限责任公司 | Steel sleeper for toothed rail track traffic |
| CN112277974A (en) * | 2020-09-30 | 2021-01-29 | 中国煤炭科工集团太原研究院有限公司 | Transmission mechanism for coal mine heavy-gradient track tractor |
| CN113215872B (en) * | 2021-04-12 | 2022-09-09 | 中铁二院工程集团有限责任公司 | Rack structure for toothed rail railway and fastener system thereof |
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2021
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202320307U (en) * | 2011-11-18 | 2012-07-11 | 泰安芬瑞特机械有限公司 | Gear monorail crane driving device |
| KR20150012439A (en) * | 2013-07-25 | 2015-02-04 | 대우조선해양 주식회사 | Pipe rack module of offshore structure |
Non-Patent Citations (1)
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| CN114059399A (en) | 2022-02-18 |
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